Subfloating body.



N. W. UHR o"; J. H. SANDBEBG. SUBFUJATING BODY.

APPLICATION FILED 050. a. 19 4.

'1 179 1%&

3 SHEETS-EHZET 2.

jzf

Patented Apr. 11, 1916.

N. W UHR & J. H. SANDBERG.

SUBFLOATING BODY. APPLICATION FILEVD M108, 1914,

Pa wnted Apr. 11, 1916 3 szasgTs-snan a.

4550i the water-on v the. like, is substantially balafnced'b STATE A ENT o FIoE.

NILS WILHELM oma'or Gormm'onm NnJoBh-N Human 'SAIND'BEBG, or sTocxHoLmswnnEN. g j

' sUnrLoA'rIive BOfDY;

a citizen of the Kingdom oi? Sweden, residfor efi'ecting suchan oscillating movement consist, generall of a piston, a diaphragm orthe like actuated in one direct'ion by a source of power placed in the-subfloating body, and in-the other direction by the pressure of the surrounding water, said devices'servi'ng to vary the displacement of.

the subfloating body. I 4

The principal object of this invention'is to efi'ect such a variation of the displacement with the smallest possible consumption of energy of said source of power. J 1

Another object of the invention is to pro- Vide means for imparting to the subfloating body after having passed the above named predetermined depth of" immersion which. is

hereinafter called centralposition in one direction, an; impulse of movement in-I-the opposite direction, the" displacement of the subfloating body then being kept constant.

or n rly 0, accountof the said, impulse, has changed the direction of movement and moving m the latterdirection has; passed the said cen-- .40 tral. position, 'tl i'e saidl'body" another impulse oi --rh'ovemf nemeddiiectiom-and i with' these objects f' 'orby means of gas pressuref'o anyoth sourceofpowen;

These and. other objects-may attained b ;m ans.oiggwqh k ica d-E17; v by er mwoe ehe of; e re i e by means of the construotion shown in the accompanying drawings, in which of a'subfloa tingbody, the source of power vof which consists of-an electromagnet and.

a battery Fig. 2 is a similar sectional view of a portion of a subfloating body provided with a source of power consisting ofa spr1ng"motor. Fig. 3 is a cross-section through the latter subfloating b0dy,'certain {details thereof being omitted. .Figs. 4 and 5 are details of the subfloating body shown in Figs. 2 and 3. Fig. 6 isa sectional. view' of a subfloatingbody, the source of power of Specification of Letterslatent. I Patefit'ed Apr. 11 1916. Application filed December 8, 1914. Serial No.- 876,079. v 7 I l v Figure 1 is ase'ctional view of a portion whicli'jconsists of a compressed gas receiver.

Referringto Fig. 1, the numeral 1 desigsure' of the surrounding water and the out- 'ward and inward movement .of which innates a diaphragm actuated by the prescreases and'decreases respectively the displacement of. the subfloating body. The" pressure of the water on, saiddiaphragm is, in respect to'the 'central depth of immersion relatively to which the subfloating bod shall oscillate up and down,-substanbalanced by a spring 2 secured atjone to the shell 2 of the subfloating body yand 'cbnnected at the other end with the (stem 4 0f the diaphragm by meansof a lever-3' pivotallymounted on a bolt 3 The said lever .31 'isin its turn by means of a conuntil the ubfloating body, on; a battery -7,- and inserted-lin the circuit of a the electromagnet fi-is a'contact device connectingpi'ece 3 connected with the'arma-. 7 "time 530i 'an' electromagnet 6, said armature being'pivotally mounted on a-b'olt 5 The 7 electromagnetiis supplied 'With'current fro'mf- 'si StiI 1 of twofcohtact pins 8 and "19 contactTwithfmwc'iccritacftg sp ings fit and 1-1 respectively. The-contact s rings 1( )T 'and 11 a si pP -t ii c a dby p gilll ich'ten s.to tn the lQE-and 13's) ip-ac ve y kF thee-t \gnecte' Series and adapted to maIiecOn- 15 acted upon bythe water pressure and means of a spring 15 The hooks 16 and 17 are pivotally mounted on the stem'15 of said hydrostat and ac-' forced outward b.

fleases the hook 19, thus allowing" the diag phragm 1 to move freely, At the same time asthe arm -13 moves upward, its contact 1'0Ti's beorehandlin. contact with the pin 8,

they circuit -'wi l1 .be closed: throughthe electromagnet' 6.) Gonsequently,'the electromag. net, .bein'g fexcited;'attractseits armature .5. '.Fig'. '1yshows-the jsubfloating bodyi'in this WtiofimmWrma are s ten mw spring 11 i's'broufht into "contact with the bontact l in. 9,'an', since the contact spring the water displaced by the same. count of its inertia the said body will, how- Fever, move some distance upward beforev emtntwofr to its inertia, the subfloating body will, however, continue to move downward some distance, before it commences to move upward. -At the same moment as the stem 4 posi'ion, the hook 13 will by the actionof the springtl i catch the hook 19, thereby locking the stem 4 and the diaphragm '1 intheir innermost positions. Owing to the inward movement of the diaphragm 1, the subfloating body will again be heavieg than n actuming. the dow e laphragm- 1 will be kept locked in. its'innermost position, until the 5 tuated by a spring 18 in such manner, that and the diaphragm 1 reach their outer-most 7o the points of the hooks 16 and 17 bear con positions, the arm 12 slides 011' the branch tinuously against the arms 12 and 13 re- 19 of the steam 4 so that the shoulder 'spectively, which, in order. to be moved by 12- comes into position behind said branch, saidhooks', are at the Ends facing the hooks "because the spring 14 as Well as the springv 0 16 and 1'7- provided with projections'12 and actuated hook 16 tend to turn the arm 12' 75 13 respectively so located, that the points downward. By the said movement of the 3 of the hooks can engage said projections. arm 12 the contact between the pin 8 and The arms 12 and 13 )do not only serve to I the contact spring is broken, and at the I support the. contact springs 10 and 11 but same time the stem 4 and the diaphragm 1 form at the same time locking members for are locked in their' outermost positions. s0

, .the stem 4 of the diaphragm 1. The stem Thus the supply of current to the electro- 4 is' forked'at the inner end thus forming magnet 6 will be interrupted, as soon as the h an u per. branch 19 and a lower branch 19 electromagnet has performed its operation. which latter ishook-shaped at the, free end. By looking the diaphragm 1 in its outer- The arm 12 is at its free end provided with most position the displacement of the subashou1der-12 serving'to'lock the stem4 in floating body is kept constant, on the one its outermost position, while-the arm 13 is hand, during its movement to the .lower provided "with a hook or shoulder 13 turning position and, on the other hand, adapted to engage the hook-shaped end 19 during the upward movement, until the said ,25 of the stem 4 and thereby to lock the st m body has passed the central position and the in its innermost position. hydrostat 15, on account of the decreasing 7 The device described above operates as Water pressure, is moved outward by the follows: When the subfloating body is spring 15 By this action of the spring l launched, the diaphragm ,1 -.is kept locked 15 the hook 16 engages the projection 12 80 in its; innerm ost position and the body is, of the arm 12 and swings said arm upward therefore, somewhatheavier than the water thereby interrupting the engagement .bedis'placed. .The contact between the spring tween theshoulder 12 and the inner end'of 11 and the pin 9-.is broken, while the hydrothe branch 19. of the stem 4 and at the same t 't15 by eans ofjthe spring- 15 iskept' time restoring-the contact between the con- ,85- in its outermostpositionr .The subfloatin'g' tact pin8 and the contact spring 10. The

Y. bpdy;descends,. andwhen it passes the cencircuit willnot, however, be closed, since --tr'al' position relatively to which the saidthe spring 14 turns the arm 13 now released 'bodyis'intended to oscillate u and'down, from the hook 17 downward, so that the the hydrostatis moved inward the water .contact between the contact pin 9 and the --40'-pressure. :Owing" thereto, the point of the contact spring .11 is broken. The lower surz ook 16-slides-alongthe'arm- 12, which bears face of the hook 13 bears now against the againstthe branch 19 of the stem '4, while pper surface of the hook 19, and as'soon the hook. 17 is brought into-engagement with as the water pressure on' the diaphragm 1 theiprojection 13 of-theiarm 13: and turns Slightly exceeding the tension of the spring- 4.5 the latter .up'ward so that the 'hoiik 13 re 24m ves the diaphragm 1 to its innermost .110

attracted, the hydrostat ldoccu ying a-.

mjd'dle, 'osition; The armature, by turnbody passes the central pos tion, whereu ,on f the ever'3, moves the stem4 and the the lWMBabOVB eated.

cqj'd-iaphragm.1 outward,',the spring-2 the form,, om vention shown in 126 'tane0usly-iacilitatin "outwar move- Figs. 2' to 5:1 sprin '2 is as in Fig. 1 used 'i."ment; thereof,- the displacefor compensating t e greater part of the h -=subfloat bit in "body is' increased, water ressure on. the-diaphragm-1 when so aim y mes 1g ter an .t e su oatmg' y,1s1n.1 cen ra p081 1on tli "dbOd em l' h th h bfl bod 'ts t l i 't' t the the sama. Owing: in the water. this case. the source of,

- Fig. 4

power effecting the outward movement of the diaphragm lconsists of a springmotor 20, the shaft 21 of which by 'means of a drivin gear '22, 23, 24, 25, 26 and 27 (see actuates, on the one hand, a starwheel 28 serving to move the stem 4 of the diaphragm 1 and, on the other hand, a member 29. The said driving gear comprises" a ratchet wheel 22 rigidly secured tothe' shaft 21 of'the motor 20, a spring-actuated Y pawl ,23 engaging saidratchet wheel 22 and placed-on a spur-wheel 24, which is loosely mounted'on the shaft 21 and engages a spurwheel 25 secured to a shaft 25 Secured to the shaft is another spur-wheel 26 in and innermost position respectively. The

arm 12 is arranged in the same manner as ,in Fig. 1, while the arm 13 does not only 0 serve to lock the stem 4 of the diaphragm 1 in its innermost position but constitutes also together with the member 29 a stopping device for the spring motor 20.

The construction and the mutual arrange- 55 ment' of themembers 13 and 29 are shown in Fig. 5. The member 29 which is secured to the shaft 27 is at its free end provided with two projections 30 and 31 placed diagonallyon the end surface of said member, while the arm 13 is provided on the one hand with a' hook 32 serving 'to lock the stem 4 in its innermost position and on the other hand with a lateral projection :33

' member'29 occupies a position at right anbetween the projections 30 and 31, thereby ermitting the arm 13 to swing downward. The device shown in Figs. 2 to 5' operates as follows: In laying out orv launching the nermost position, the stem '4 being locked by the hook '32 of the arm 13 engaging the corresponding hook-shaped projection 19 of the*stem-4,;.while the hydrostat 15 is keptin its outermost position bygjhe spring 15 j The spring motor 20 is stopp'edfo faccount 3 of the members 13 and 29occupying the -po-' sitions shown at the left side i of Fig. 5.

When the subfloating body ing the downward movement has passed the 'cehtrahpo i 1 sition, the hydrostat 15 is moved inwardly,

and, owing thereto, the =;hoo'k 17 turns the? arm 13 downwardly thereby releasingthe adapted to stop the member 29. When the stem 4, while the lateral projection 33 passes downwardly between the projections 30 and- 31 of the member 29. As soonfas the projection 30 has been disengaged from-the lateral projection 33, the member'29 by the action of the spring motor 20 makes one revolution and is then stopped bythe arm of Fig. 5. While turning the member 29 one revolution, the spring motor at the 13 in the position shown at the right side same time turns the star wheel 28 which engaging a tooth 4 on the stem 4 moves the dlaphragm 1 to its outermost position. In thisposition of the diaphragm the arm 12 engages the inner end surface of the stem. 4, thus locking said stem in its outermost position. The 'subfloating body has now received an impulse for the upward movement, and the spring motor as well as the diaphragm 1 have then been stopped and made inoperative. The subfloating body continues, however,to move downward some distance before returning upward. When passing the central position in the upward movement, he hydrostat 15 is moved outward, and, on account thereof, the hook l6 turns the arm 12 upward thereby releasing the stem 4, while the hook 17 is disengaged from the'arm-13, which in its turned down position (at the right side of Fig. 5) keeps the spring motor stopped. When' the ,diav phragm 1. moves inward, owing to the water.

pressure, the arm 13 is'turned upward, so

that the hook 32 of the said arm-13 engages the hook 19 of the stem 4, thereby locking -.said stem in its innermost position. By

thismovement of the arm 13 the stopping member 29 will be released and turned to a the position shown at the left side of'Fig. 5; T The subfloating body hasnow received an impulse for downwardm'ovement, but 0011- tinues. to move upward.. before-'tur11ing.'

'- downwardly. When passing thBF BH I-P water pressure, and the play described above is reiterated. 5

In the form ofthe invention-shown 1n sure onthe diaphragm 1 is'efi'ected by means of compressed air'or other wgas contained in. a c lesed compartment 34. In this case subfloating body, the diaphragmi'sin its in a piston--35 is-suhst1tuted for the gtenr jg i the said; 1 diaphragm, said piston being actuated by compressed air or other gas coniti j, the hydrostat 15' is actuated by t e Fig.6 the counteracting of the water pres- .tained in a receiver '36. The hooks- 16- and x 17 supported by thestem 15 of the hydrostat'15 serveto control the supply ofcompressed gas to the cylinder 3t)? of-the,piston i35bvhg aid ofispring actuated valves .37 1

respectively J and as, 'f ufisrszeni er and3'8 v r ofwhich, a're. "pivotally connected with the h'ooks 1e and 173fr6 1m ive y= I The device fshoW-n -in fE1g.-. G. .aper

" ffollowsz'at theoutset the" arm sl li'and 1,3. .reSp actuated pies its outermost position, under the action of thejgas pressure in the compartment 34: and likewise the hydrostat 15 is kept in its outermost position by the spring 15 Inthis position the valve 37 is open and the valve 38 closed. When launched the sub-floating body is, accordingly, somewhat lighter than the water displaced, but by reason of the fact that it is launched from a oint over the water surface it receives a "s cient momentum for sinking to such a depth that the outer water pressure moves the diaphragm l to its innermost position. When the subfloating body then in its downward movement passes the central position and the hydrostat 15 is pressed inward by. the water pressure, the hook 16 releases the arm 12,so that .the valve 37 is pressed against its seat by its inertia .the subfloating body continues,

however, to move some distance downwardly before returning. When the subfloating body passes its central position, the hydro-' stat is pressed outward b the spring 15 the hook 1'1 thereby releasing the arm 13, so that the spring 38 will be allowed to close the valve 38. At the same time or a moment after the arm 12 is actuated by the hook 16 in such manner that it opens the valve 37.

. The compressed gas contained in the cylinbe kept relatively low or, if a highpressure 1 the counteracting of the water pressure by der 35 now escapes, so that the water pressure can move the diaphragm 1 and the piston 35 inward, thereby rendering the subfloating body heavier than the water dis-- placed. Fig. 6 shows the sub'floating body in this position. -When the subfioating body, owing to its inertia, has moved upward some distance and then returning downward passes the central position, the .play described-above is reiterated. On account of means of the gas pressure in the compartment'34,'the pressure in 'the receiver 36 may is used," the piston" area may .be taken small' and the consumption of gas thereby be reducted.

' Having now described our invention, what we-claim as new and desire tosecure' by Letters Patent is;

1. In a subfloati'n body. adapted. toperform a l ,oscillatinginiovemeiit"abouta ition of equilibrium below the surface 0 the.

water, the ,com bin ation of means for varyin the di splabementof the body, a. ot po wer vfor efiecti'n'g' .the' variam n f Placement, a hydrostatic device tion of equilibrium below the surface 0 the water, the combination of a yielding member for varying the displacement of the body, a source of power 'for eflecting the variations of the displacement, a hydrostatic device controlling said source of power, and means for constantly counteracting the water pressure on the said yielding member.

3. In asubfloating body adapted to perform an oscillating movement. about a position of equilibrium below the surface of the water, the combination of a yielding member adapted to be actuated upon in one direction by the pressure of the surrounding water when the body has been launched, a source of power for periodically acting upon said yielding member in the other direction, a hydrostatic device controlling said source of power, and means for constantly counteracting the water pressure on said yielding member. 4

4. In a subfloating body adapted to perform an oscillating movement about a position of equilibrium below the surface of the water, the combination of a yielding member for varying the displacement of the body, means for locking said member in its innermost and outermost positions, a source A of power for effecting the variations of the displacement, a hydrostatic device controlling said source of power, and means for constantly counteracting the water pressure on said ylelding member.

5. In a subfloating body adapted to perform a l-oscillating movement about a position of equilibrium below the surface of the water, the combination of a yielding member for varying the displacement of the body, means for locking said member in its innermost and outermost positions, a source of power for eifecting the variations of the displacements, a hydrostatic device controlling said locking'means and said source of ower, and means for constantly counteract- 1ng the water pressure on said ylelding memr. y SQ In a s'ubfloating body adapted to perform an oscillating movement about a osition of equilibrium below the surface 0 the 1 water, the combination of a yielding me-.

ber adapted to be aguated upon in one d1- tion "y the pressure of the surrounding water when the body has beenv launched, a spring constantly counteracting the pressure of the water on said yielding member, a source of war for periodically acting upon said mom 1 r, and a hydrostatic device controlling the operation of said source of 7 In a subfioating body adapted to perform an oscillating movement about a position of equilibrium below the surface of the Water, the combination of a yielding member adapted to be actuated upon by the pressure of the surrounding water, when the body has been launched, a spring for constantly counteracting the pressure of the water on said yielding member, a spring motor for periodically acting upon said member, means for locking the yielding member in its innermost and outermost positions, and a hydrostatic device controlling said locking means and said spring motor. 7 p r In. testimony that 'We claim the foregoing 15 as our invention, we have signed our names in presence of two subscriblng wltnesses.

NILS 'WILHELM UHR. J OHAN HJALMAR SANDBERG. 

